Today, MidAmerican Transmission announced a Canadian subsidiary has
entered into a joint venture with Renewable Energy Systems Canada Inc.
(RES Canada, www.res-americas.com)
in Ontario, Canada, to sponsor a competitive proposal for the province's
East-West Tie Line project.

MidAmerican Transmission plans to actively compete in the competitive
process for already established projects and for projects in
development. Future projects will build upon MidAmerican Transmission's
experience in the existing joint ventures of Prairie Wind Transmission
and Electric Transmission Texas.

Greg Abel, chairman, president and CEO of MidAmerican Energy Holdings
Company, the parent company of MidAmerican Transmission, said, “This
announcement reflects MidAmerican's further commitment to complete
electric transmission projects in a timely and cost-effective manner,
which will ultimately provide economic benefits to and improve
reliability for electric end-use customers.”

“MidAmerican Transmission looks forward to building upon MidAmerican
Energy Holdings Company's experience in constructing, owning and
operating transmission assets,” said John Cupparo, president of
MidAmerican Transmission.

“The expansion of MidAmerican Transmission will help provide important
benefits to customers in Canada through this joint venture with RES
Canada and in the U.S. when competition is established under the Federal
Energy Regulatory Commission processes under its recent Order No. 1000.
MidAmerican Transmission will seek to develop transmission projects
jointly with footprint utilities in this competitive environment but
also is positioned to compete on a stand-alone basis.”

MidAmerican Transmission, a wholly owned subsidiary of MidAmerican
Energy Holdings Company, based in Des Moines, Iowa, is engaged in the
development of electric transmission facilities. MidAmerican
Transmission has invested in transmission in several regions in the U.S.
and is evaluating opportunities to further develop electric transmission
facilities in organized and traditional markets in the U.S. and Canada.
Additional information about MidAmerican Transmission is available at www.midamericantransmission.com.

Both MidAmerican Transmission and the Canadian subsidiary are wholly
owned by MidAmerican Energy Holdings Company. Through its subsidiaries,
MidAmerican provides electric and natural gas service to more than 6.9
million customers worldwide, operates an extensive 18,000-mile electric
transmission system, a natural gas local distribution system, and
extensive pipeline systems totaling nearly 17,000 miles. Learn more at www.midamerican.com.